The Ultimate Guide to Silicone Render: Cost, Colours, and Common Questions

If you’re considering giving your property a fresh, modern finish while ensuring it stays protected from the elements, silicone render may be the perfect choice. In this comprehensive blog post, we’ll dive into the details surrounding silicone render cost, potential silicone render problems, options available on the market like Johnstone’s silicone render and EWI Pro silicone render, and even how to find silicone render near me.

Let’s explore everything you need to know about silicon rendering — from colours and paint options to alternatives like K Rend silicone render.

What Is Silicone Render?

Silicone render is a modern, high-performance external finish that’s used as part of external wall insulation (EWI) or as a standalone decorative coat. It contains silicone additives which make it:

• Highly breathable
• Water-repellent
• Flexible and crack-resistant
• Resistant to algae and mould growth
• Available in a vast range of silicone render colours

Thanks to these features, silicone render is widely popular across the UK for both new builds and refurbishment projects.

Silicone Render Cost in the UK

When planning your renovation budget, understanding the silicone render cost is key. Pricing can vary based on:

• Brand (e.g. EWI Pro, Johnstone’s, K Rend)
• System type (with or without insulation)
• Labour and installation
• Size and condition of the building
• Render thickness (usually 1.5mm is standard)

🔹 Typical cost range:

• Materials only: £25–£35 per m²
• Installed with EWI: £90–£130 per m² (including labour)

Although the initial cost of silicon rendering is higher than traditional renders, it offers better long-term value thanks to its durability, weather resistance and minimal maintenance requirements.

Silicone Render Colours – What Are the Options?

One of the most attractive aspects of silicone render is its extensive range of colour options. Whether you want to keep it classic or go bold, manufacturers like EWI Pro and Johnstone’s silicone render offer hundreds of shades.

• EWI Pro Silicone Render: Over 200 colour options, custom tinting available
• K Rend Silicone Render: Known for its mineral-inspired colour palette
• Johnstone’s Silicone Render: Wide selection with UV-resistant pigments

You can even combine coloured render with textured finishes to create a truly unique facade.

Common Silicone Render Problems (and How to Avoid Them)

Despite being a high-quality product, there are a few silicone render problems that homeowners may face — usually due to poor installation or substandard materials:

1. Poor adhesion – caused by unprimed or dusty surfaces
2. Discolouration – often the result of improper mixing or drying
3. Cracking – when render is applied too thickly or over unstable substrates
4. Algae growth – if applied in permanently damp areas without drainage

✅ How to avoid issues:

• Always use a certified installer
• Choose trusted brands like EWI Pro or Johnstone’s
• Ensure proper surface preparation and priming

Johnstone’s Silicone Render vs. EWI Pro Silicone Render

Both EWI Pro and Johnstone’s silicone render are leading names in the UK market. Here’s a quick comparison:

Both options offer great performance — your choice will depend on availability, project scale, and preferred colour finish.

Finding Silicone Render Near Me

Looking for silicone render near me? You can source these materials online or via local merchants. Try checking:

• ewistore.co.uk
• Selco Builders Warehouse
• Travis Perkins
• Screwfix or Toolstation (for accessories)
• Local render specialists

Always confirm the product’s authenticity and check if it’s compatible with your intended system (e.g. EWI Pro Silicone Render or K Rend Silicone Render).

Can You Paint Over Silicone Render?

Painting over silicone render isn’t typically recommended, but if needed, it must be done with specialised breathable paints that adhere to water-repellent surfaces.

Look for:

• Silicone resin-based paints
• Mineral paints (like KEIM)
• Paints approved by the render manufacturer

Standard masonry paints often peel off due to the surface’s hydrophobic nature.

Final Thoughts

Silicone render is one of the most advanced and popular finishes available for external walls in the UK. Whether you’re considering K Rend silicone render, Johnstone’s silicone render, or EWI Pro silicone render, you’re choosing durability, beauty, and low maintenance.

Just remember:

• Know your silicone render cost upfront
• Pick from approved silicone render colours
• Work with certified installers to avoid silicone render problems
• Source from trusted suppliers if you’re looking for silicone render near me

Need help choosing the right render? Contact the EWI Store team for expert advice!